Mean s eos incbeasiktg she es stciencli osi eos-swaging machines



C. EISLER.

MEANS FOR INCREASING THE EFFICIENCY OF HOT SWAGING MACHINES.

APPLICATION FILED MAR. 28. 1910.

1,324,886. Patented Dec. 16,1919.

WITNESSES: I INVENTOR ine-W Char/e6 [A's/er standard forms.

QETED he, 5

CHARLES EISLER, 0F IRVIX ZGTQEET, NEW JERSEY, "WESTING-EQUSE LAMEGOMPAN'FZ, A GORPQRATION OF 1 3N255; LVhNEfL.

MEANS FOR INCREASING THE EFFIGIENGY @F EtiflT-SWAGING; MACHINES.

Specification of Letters Patent.

raeeneecnec. is, rare.

Application filed March 28, 1913. Serial No. 225,3W.

and useful Improvementin Means for In.-

creasing the Efiiciency of Hot-Swaging Ma.- chines, of which thefollowing is a specificationn This invention relates to machines adaptedfor the hot swaging of metals and particularly to means for increasingthe production capacity of swaging machines of this type.

In swaging machines now commonly in use, where metals and alloys thereofare worked in a hot state, the spindle carrying the rotative parts ofthe head including the swaging dies, becomes very hot. The heating-ofthis element greatly increases the wear thereon and the machine must beoperated at a considerably lower speed than would be necessary if thisheating effect were eliminated. It has heretofore been proposed to placewater-cooled jackets upon the outside of swaging machines of. certaingives the machines a cumbersome appearance but do not function veryefiicl'entl be.-

cause the cooling medium circulated tierethrough is not suflicientlyclose to the head shafts or spindles to be capable of exertmg anysubstantial cooling effect thereon;

It is one of the objects of this invention to provide means whereby thespindle carrying the swaging dies may be rapidly cooled, with aconsequent decrease in wear and a resultant increase in productioneffected by an increase in the speed of operation of the machine. r

In accordance with this invention, a hollow chamber is provided as anintegral part of the head of the swaging machine and is located in closeproximity to the rotatire Spindle carrying the swaging dies. Thischamber or jacket is provided with an inlet and an outlet positioned atpoints relatively close to each other and an intermediate barrier toinsure a maximum circulating area for the water passing through thejacket. This construction affords a continuous circulation of water inclose proximity to the spindle, whereby it may be rapidly cooled, thusreducing the wear thereon and simultaneously permitting the associatedmechanism for operating Such devices. not only resulting in increasedproduction.

The nature of the means by which the foregoing and other more specificobjects of the invention are accomplished will appear from the followingdetailed descriptlon. or The invention is illustrated in theaccomoperation thereof at a much higher speed, 1

panying drawings in which Figure 1 is an 7 elevation, partly in section,of a swaging machine embodying the invention; and Fig. 2 is an end frontView of'the machine shown inFigl. p

Like reference characters refer to like partsthroughout the severalfigures.

In the machine shown inthe drawing, only-so much is illustrated as isthou ht necessary to disclose the invention. In t is disclosure is shownahead portion 1-suit-- a'bly attached to asupporting base 2. The headportion 1 isprovidedwith a hollow shaft'or spindle 31 which is axiallymounted within a cylindrical casting 4. Onthe right-hand. or front sideof the head 1 are mounted the usual swaging dies and the the. same,these elements not being shown in detail, as they are well known tothose skilled in the art. Onithe left-hand side of the spindle 3 isrigidly mounted '-a pulleyv 5 adapted to accommodate a belt for rotatingthe spindle The casting 4' is provided with a hollow chamberor jacket6-which extends substantially the full distance around the inner portionof the casting and is positioned relatively close to the spindle 3. Toreinforce the adjacent surfaces forming the jacket 6, strut members 7,preferably cast integral with thecasting 4, are located at convenientplaces, and one of these strut members may be provided with an aperture8 leading from the exterior of the casting 4 to the interior thereof,said aperture being designed to function as an oil-cup for lubricatingthe spindle 3, when rotating.

ice I 1 and the work is passed through the mac ine in a heated conditionfrom right to left.. As the work passes through the ma.

chine, on account of the action of the dies and their initial heatedcondition, consider able heat is conducted to that portion of thespindle 3 immediately followin or contiguous to the vswaging dies, witht e consequent efiect that this portion of the spindle isexcessivelyheated. If the spindle 3 were rotated at a very high speed, its temperature would be increased much more, in the absence of any cooling agencyother than normal radiation, and, if the swaging machine were operatedin this condition for any considerable length of time, the wear on thespindle 3 would be very great, resulting in high depreciation of it andadjacent parts which, in a short time, would necessitate replacementthereof, with the consequent loss in production due to the idleness ofthe machine during the time required for replacing the aforesaid parts.However, by means of the water-cooled jacket 6, located in closeproximity to the spindle 3 and having suiiicient capacity to permit thecirculation of a considerable volume of water over a relatively largearea, the temperature of the spindle may be kept within safe operatinglimits, although rotated at as high speed as may be dictated by approvedpractice, considering the design of the parts comprising the swagingmachine.

From the above description it will be apparent that the structurecontemplated by this invention provides for a continuous circulation ofwater or other cooling liquid in closeproximity to the rotatable spindlecarrying the swaging dies, which eifects the eflicient cooling of thesaid spindle, thereby decreasing the wear thereon, permitting the rapidrotation thereof, etc. It is obvious that, if my invention were embodiedin a standard swaging machine, it would be possible to operate suchmodified machine at the speed for which it was originally designed andat a greatly reduced depreciation factor which would compensate for thediiference in production capacity when operated at this lower speed andat maximum speed, by resulting decrease in the cost maintenance and lossoccasioned by idleness of Leeaeee the machine during repairs. In otherwords, the speed of operation may resolve itself into a question ofcontinuous running at a fair speed, or interrupted running at anexcessive speed, the determination of a par-' 'ticular speed beingdependent upon a question of policy and the conditions of a given case.From experience I have learned that a standard form of swagin machine,.When modified in accordance wit my invention, may be operatedcontinuously at 850 revolutions per minute, the speed for which it wasoriginally designed, or the same machine may be operated at a speed offrom 2700 to 3000 revolutions per minute, with a resultant greaterdepreciation factor than in the first instance.

While I have described my invention with reference to the specificembodiments shown, it is obvious that various changes in detail may bemade without departing from the spirit and scope thereof.

Claims 1. A swaging machine having a Watercooled jacket formedinternally of the machine head, and a spindle journaled within said headand arranged to be influenced by the cooling efi'ectof said acket.

2. In a swagingmachine, the combination with swaging dies and mechanismfor actu ating the same, of a hollow spindle, means for rotatin thesame, a water-cooled jacket integrally formed internally of the machinehead and having an opposing surface in close proximity to said spindle,whereby the latter may be rapidly cooled.

3. In a swaging machine, a head, a watercooled jacket integrally formedinternally of said head, a spindle journaled Within said head andarranged relatively close to the opposing surface of said jacket,whereby the said spindle may be cooled to good efiect.

4. In a swaging machine, a head, a watercooled jacket integrally formedinternally of said head, a spindle journaled within said head andarranged adjacent one of the surfaces of said water jacket, supportingmembers for reinforcing the walls of said jacket, one of said supportingmembers being adapted to function as an oil passage to said spindle, andmeans for providing a con tinuous circulation of water through said jacket, whereby said spindle may be rapidly cooled.

In testimony whereof, I have hereunto subgcribed my name this 7th day ofMarch, 191

CHARLES EisLE R.

